Amphaithip, K., S. Phommaseng, and S. Phommachan. “Study the Sentences in the children’s Story Books of Ay Nounoy Publishing House in Luang Prabang”. Souphanouvong University Journal Multidisciplinary Research and Development, vol. 8, no. 1, June 2022, pp. 197-0, http://www.su-journal.com/index.php/su/article/view/185.